---
title: '開發小技巧'
disqus: hackmd
---
###### tags: `system`
開發小技巧
===

[TOC]

## 開發小技巧的敘述

常見的開發小技巧

1. 一個東西很複雜的話，可以先在for迴圈外面宣告全域變數的List，之後透過for迴圈去List.add(it)，若之後要轉hashmap的話，可以之後再轉Hashmap，缺點是比較費時，但是程式碼比較好懂，也比較容易撰寫。

2. 在本地端要想辦法取得相對的路徑，這樣才能去夾帶檔案，因為部署的server時，你的絕對路徑會有問題

## 不會被覆蓋

		
		for (Long eachCid : CustomerID_OptimizationFromAllieList) { // each cid
			Long eachAccountMCCID = AllMCC_CustomerIdMap.get(eachCid );
			// 拿到each CID的MCCID這樣才能打API

			GoogleAdsServiceClientAgent gasAgent = new GoogleAdsServiceClientAgent(eachAccountMCCID,
					clientOAuthPropertiesBean);
			GoogleAdsClient googleAdsClient = gasAgent.giveMeAnUsefulGoogleAdsClient();
			
			List<CampaignBean> SingleCustomerCampaignBeanList = googleCampaignService
					.getCampaignListFromGoogleAdsApi(googleAdsClient, eachCid );//
			
			List<Long> campaignList=new ArrayList<Long>();
			
			for (int i = 0; i < SingleCustomerCampaignBeanList.size(); i++) {
			
				Long CampaignID = SingleCustomerCampaignBeanList.get(i).getCampaignID();

				List<CampaignPerformanceBean> SingleCampaignPerformanceBeanList = googleCampaignService
						.getCampaignPerformance(googleAdsClient, eachCid, CampaignID, start_Date,
								end_Date);
				
				if (SingleCampaignPerformanceBeanList.size() >= numbersofDaysCostGreaterThanZero) {// 符合條件就加入
					
					campaignList.add(CampaignID);

					CustomerIDwhichInAI_HashMap.put(eachCid, campaignList);

				} // end if check 每個campaign有沒有符合兩個條件

			} // end for loop all campaign in single CID
			
		}
		

## 需要使用if敘述來確保不會被覆蓋

	for (int i = 0; i < dataListCampaignFromAllie_size; i++) {   // each campaign  
			
		
		    
			Long  campaignID =Long.valueOf( dataListCampaignFromAllie.getResponseResult().get(i).getCampaignId( )   )	  ;
		    Long cid = Long.valueOf(dataListCampaignFromAllie.getResponseResult().get(i).getCid());
		    Long eachAccountMCCID = AllMCC_CustomerIdMap.get(cid );
			GoogleAdsServiceClientAgent gasAgent = new GoogleAdsServiceClientAgent(eachAccountMCCID,
					clientOAuthPropertiesBean);
			GoogleAdsClient googleAdsClient = gasAgent.giveMeAnUsefulGoogleAdsClient();
		    
			List<CampaignPerformanceBean> SingleCampaignPerformanceBeanList = googleCampaignService
					.getCampaignPerformance(googleAdsClient, cid, campaignID, start_Date,
							end_Date);

			if (SingleCampaignPerformanceBeanList.size() >= numbersofDaysCostGreaterThanZero) {// 符合條件就加入
				
				
				
				
				if(CustomerIDwhichInAI_HashMap.containsKey(cid )     ) {
					
					List<Long> campaignList=CustomerIDwhichInAI_HashMap.get(cid)	;
					
					campaignList.add( campaignID);

					CustomerIDwhichInAI_HashMap.put(cid, campaignList);
					
				}else {

					List<Long> campaignList=new ArrayList<Long>();	
					
					campaignList.add( campaignID);

					CustomerIDwhichInAI_HashMap.put(cid, campaignList);
			
				}
				

			} // end if check 每個campaign有沒有符合兩個條件
		    
		}